Seaking

With the addition of Swords Dance into its movepool, Seaking manages to function as a competent setup sweeper. With STAB Surf as an added bonus, it also blasts through common Hyper Beam switch-ins, such as Rhydon. Agility distinguishes Seaking from its competing Swords Dance users, as, even when paralyzed, it still poses a threat to sweep if the opposing team has been damaged. Once set up, Seaking can be a difficult Pokemon to stop, KOing frailer Pokemon such as Persian and Jolteon from over 75% HP with Hyper Beam. Seaking is decently sturdy as well, surviving two hits from Starmie's Thunderbolt and Alakazam's Thunder Punch a significant majority of the time, giving it more opportunities to set up than Kingler.

However, Seaking has to use both Swords Dance and Agility to pose any threat to the opposition. With only Surf and a single physical attack in its attacking moveset due to this—most likely Hyper Beam or the middling Double-Edge—Seaking is not surpassingly rewarding either, struggling to break through bulky Pokemon like Reflect Chansey. It's also completely incapable of breaking through the common Gengar and is struck with Thunderbolt in return; the improved coverage of staples like Thunder Punch for Alakazam and Hypno does not help its case either. Seaking is rarely seen in Tradebacks OU by account of its committal nature and unexceptional reward, normally finding itself competing with Kingler, which, while lacking Agility, has far better damage output for the effort put in.